from abc import ABC, abstractclassmethod
from collections import deque
import heapq
import time
import os
import time
import csv
import random
class Cell:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.isWall = False
        self.isStart = False
        self.isExit = False
    
    
    def __eq__(self, other):
        if other is None:
            return False
        return self.x == other.x and self.y == other.y
    def __lt__(self, other):
        
        if other is None:
            return False
        return (self.x, self.y) < (other.x, other.y)
    def __hash__(self):
        
        return hash((self.x, self.y))
    
    def __repr__(self):
        return f"Cell({self.x}, {self.y})"
    def isPassable(self):
        return not self.isWall

class Maze:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.grid = [[Cell(x, y) for y in range(height)] for x in range(width)]
        self.start = None
        self.exit = None
    
    def getCell(self, x, y):
        if 0 <= x < self.width and 0 <= y < self.height:
            return self.grid[x][y]
        return None
    
    def getNeighbors(self, cell):
        neighbors = []
        directions = [(0, 1), (0, -1), (1, 0), (-1, 0)]  
        for dx, dy in directions:
            neighbor = self.getCell(cell.x + dx, cell.y + dy)
            if neighbor and neighbor.isPassable():
                neighbors.append(neighbor)
        return neighbors
    
    def setStart(self, x, y):
        cell = self.getCell(x, y)
        if cell:
            cell.isStart = True
            self.start = cell
    
    def setExit(self, x, y):
        cell = self.getCell(x, y)
        if cell:
            cell.isExit = True
            self.exit = cell